JPS5824236Y2 - digital display electronic clock - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a digital display type electronic wristwatch that has calendar display and memo display functions and is equipped with a two-stage action button switch as a display operation switch.

The digitization of watches has been carried out along with the demand for improved accuracy, but this digitization has naturally led to a change in display devices.

Digital time displays have become commonplace, replacing the traditional analog time displays with dials and hands.

However, when a date and day of the week display section is added to this digital display wristwatch, there is a problem in that the display surface becomes complicated.

Therefore, it has been considered to switch between the time display and the date and day of the week display.

On the other hand, with the digitization of clocks, it has become possible to display notes other than days of the week and dates (for example, to notify deadlines and due dates), and it has become necessary to switch between these displays and time displays.

Therefore, it has become necessary to devise various methods to enable switching display.

On the other hand, along with these new demands in terms of switch functions, it has become necessary to consider and create a switch operation section suitable for digital display wristwatches that has never existed before.

New switch operation unit compatible with new switch functions.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to meet the above requirements by providing a digital display wristwatch characterized by a two-stage action button.

This will be explained below with reference to the drawings.

FIG. 1 shows how the time display (12:45) and the day of the week and date display (Sunday, 24th) are switched.

The switch used here is a conventional bushing switch.

FIG. 2 shows a circuit for automatically performing the above switching at regular time intervals.

A is a time signal, B is a signal such as the day of the week and date, 2 is a device that automatically controls switching, ■ is its output signal, and C is the output of this logic circuit, which is sent to the display device via the drive circuit. , is displayed as shown in FIG.

The logical formula of this circuit is: When AV+BV=C and ゛■20, it becomes C-A, the time is displayed, and V=1
At this time, the display becomes CB, and the day of the week, date, etc. are displayed.

The signal V is automatically switched by the automatic control device 2 by repeatedly changing from ■-0 to V=1 at fixed time intervals.

Figures 3 and 4 are diagrams showing how manual switching is performed.In this digital display wristwatch, a conventional button switch 31.41 and a two-stage action button switch 32.42 according to the present invention are added. has been done.

In the digital display wristwatch shown in Figure 3, during normal times,
Time display (12:45) and calendar display (Sunday, 24:00)
days) are automatically switched at regular intervals, but if you particularly want to see the calendar display, operate the button switch 31 and the display will switch to the calendar display only while this switch is pressed. It looks like this.

In the digital display wristwatch shown in Figure 4, during normal times,
The time display (12:45) and calendar display (August 15) or time display and memo display (August 15) are automatically switched, and the button switch is a two-stage action button. When you operate , the display switches to calendar display or memo display only while you are operating it.

FIG. 5 is a logic circuit diagram of the embodiment shown in FIGS. 3 and 4, where U is a manual switching signal, ■ is an automatic switching signal, and X is a control signal for the switching circuit, which is the logical sum of U and V. The output is X.

The logical formula for this circuit is AX10BX=C,X=U+V It is.

■20. When U=O, X=0 and C=A, and the time is displayed.

In other cases, X=1 and C=B, and time such as day of the week and date is displayed.

In other words, normally only the automatic switching device works, and ■ changes from ■ = O to V = 1 at regular time intervals, and the display switches, but when you particularly want to see the time display, such as the day of the week and the row number, When the switch 10 is turned on manually (U=1), in this embodiment, the day of the week and date are displayed only for the time the switch 10 is turned on.

FIG. 6 shows an embodiment of display switching using timer operation, 60 is a display switching means, 62 is a control circuit that controls the display switching means 60, 64 is an external operation switch that operates the control circuit 62, and 66 is an arbitrary switch. 68 is a detection circuit that detects the fixed time when the set operation time of the external operation switch is less than the fixed time of the timer circuit 66, and detects the set operation time when it is greater than the fixed time. When the time display (A) is turned on by hand, it changes to display the day of the week and date, and even if the hand is removed, the day of the week and date continue to be displayed for a certain period of time, as shown in (C).

Figure 7 is a logic circuit diagram of a manual changeover switch that uses the above timer operation, and the logic formula for this circuit is AX+BX
=C, X=U+H, where H is the timer output signal.

In the figure, 12 and 12' are data type flip-flops, and 13 is a counter device in which several stages of flip-flops are combined.

The operating waveforms of the circuit in FIG. 7 are as shown in FIG.
When switch signal U is input by manual operation, counter signal H1 is generated in synchronization with clock pulse φ1, and counter 1
3 starts counting the clock pulse φ, and the timer signal H becomes 1.

The signal H continues until the capacity of the counter 13 is saturated, and when the counter 13 is saturated and enters the reset state again, the timer signal H becomes O.

As a result, the display switching signal X continues for a certain period of time after the manual switch is operated, and this duration is determined by appropriately setting the capacity of the counter.

Further, in this case, if it is desired to switch for a time longer than the set timer duration, by turning on the switch for that time, U=1, X=l, C=B, and the switching becomes possible.

Furthermore, by combining this circuit function with the circuit function shown in FIG. 5, the above three functions, namely a manual switching,
B. It is possible to provide a function of continuous manual switching for a certain period of time and C. periodic automatic switching.

Figure 9 shows time signal A, date and day of the week signal B, scheduled time set in memory in advance, and memo information such as battery replacement time, etc., which can be switched and displayed using externally operated switch signals X or X'. This is a gate circuit for displaying as signal E.

The logical formula of this circuit is E-(AX+BX)X+DX'.

In this case, the button switches 41 and 42 are not only capable of switching between the time display and calendar display, and the time display and memo display as shown in Fig. 4, but also include the function of switching between all three. By operating properly,
This is the station where this switching takes place.

This invention has many functions that can be added, and it has a switch that is suitable for digital display electronic wristwatches, which is the newest type of watch, so it has a new design.
The tangible and intangible effects of switch configurations that correspond to functions, etc. are significant.

[Brief explanation of drawings]

Figure 1 is a diagram showing how the time display and calendar display are switched in a digital display electronic wristwatch, Figure 2 is a circuit diagram for automatically switching the display periodically, Figures 3 and 4 The figure shows how the time display can be switched to a calendar display or a memo display by manual operation, Figure 5 is a circuit diagram that allows switching between the time display and calendar display both automatically and manually, and Figure 6 is a Figure 7 is a circuit diagram of a manual changeover switch with timer operation; Figure 8 is a diagram showing the operating waveforms of the circuit in Figure 7; Figure 9 The figure shows a circuit diagram for switching between three types of time, calendar, and memo information. 2... Timer device, 10... Switch, 32° 42... Two-stage action button switch.

Claims (1)

[Scope of utility model registration request] In a digital display type electronic watch equipped with a display switching means for switching and displaying a plurality of pieces of information on the same display, a control circuit for controlling the display switching means;
The control circuit includes an external operation switch that operates the control circuit, and the control circuit includes a timer circuit that detects an arbitrary fixed time, and when the set operation time of the external operation switch is less than the fixed time, the fixed time is set, and when the set operation time of the external operation switch is less than the fixed time, The display includes a detection circuit for detecting the set operation time, and one of the plurality of pieces of information is always displayed on the display, and when the time for setting the external operation switch is less than the predetermined time, the display is displayed on the display. After switching to another information among the plurality of information for the certain period of time, it automatically returns to the original information, and after the certain period of time or more, the display changes to another information among the plurality of information on the display. A digital display type electronic clock characterized in that it is configured so that only the set operation time is changed.